Viaduct over river Deza
Atlantic Axis high-speed rail line
CLIENT
Comsa
CITY
Silleda, Spain
TECHNOLOGICAL SOLUTION
Incremental launching
DESCRIPTION

Pylons executed resorting to a climbing formwork system

Deck built using the incremental launching system, capable of launching pre-fabricated segments of 35 meters long

TECHNICAL FEATURES

  • PYLONS MAX. HEIGHT | 96,50 m
  • FULL LENGTH |175,00 m
  • SEGMENTS | 35,00 m
  • Nº OF SPANS | 18,00
  • WIDTH | 14,00 m
  • MAIN SPAN | OGIVAL ARCH WITH 150,00 m OF SPAN and 106,00 m of HEIGHT

GENERAL PROJECT INFORMATION

The bridge’s deck, executed by applying the incremental launching method, is a constructed piece of 1175 meters length and has a total weight of 65,000 tons. The deck’s entire construction was performed outside of the bridge so that after it could be pushed over the pylons until its final location. In addition, the construction of the ogival arch over the Deza River, was executed with two semi-arches of 110 meters, firstly built in the vertical position and then after gradually inclined until the two elements merge together.

PROJECT BENEFITS

The construction of this viaduct enabed the passage over the Deza River Valley, in Silleda by the high speed railway. This design had to incorporate all the characteristics required for the use by the high speed railway to ensure the smooth passage over the structure.


THE OTHER SIDE IS CLOSER